IMHO many of the Religious Right are first politically conservative and then religiously conservative/fundamental.
As an agnostic married to a believer, I've been attending churches for over 25 years. A couple of the churches were Southern Baptist with politically conservative pastors.
I remember one pastor from the pulpit urging the congregation to sign his anti-ObamaCare petition. No Biblical arguments, just political ones against ObamaCare. No alternative solutions either.
Liberty University is advocating the carrying of guns including on campus. In announcing the change, University President Jerry Falwell Jr referred being able to kill Muslims like those responsible for the San Bernardino shooting as the reason. I however haven't found any references to Biblical justification for carrying a device which has the sole purpose of killing.